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Spin (physics) Spin is an intrinsic form of angular momentum carried by elementary particles, and thus by composite particles such as hadrons, atomic nuclei, and atoms. [ 1][ 2]: 183 –184 Spin is quantized, and accurate models for the interaction with spin require relativistic quantum mechanics or quantum field theory .
Spin is an electric bicycle-sharing and electric scooter-sharing company. It is based in San Francisco and was founded as a start-up in 2017, launching as a dockless bicycle-sharing system controlled by a mobile app for reservations.
The component of the spin along a specified axis is given by the spin magnetic quantum number, conventionally written m s. [ 1 ] [ 2 ] The value of m s is the component of spin angular momentum, in units of the reduced Planck constant ħ , parallel to a given direction (conventionally labelled the z –axis).
t. e. In quantum physics, the spin–orbit interaction (also called spin–orbit effect or spin–orbit coupling) is a relativistic interaction of a particle's spin with its motion inside a potential. A key example of this phenomenon is the spin–orbit interaction leading to shifts in an electron 's atomic energy levels, due to electromagnetic ...
Spin was established in 1985 by Bob Guccione, Jr. [2] [3] In August 1987, the publisher announced it would stop publishing Spin, [4] but Guccione Jr. retained control of the magazine [5] and partnered with former MTV president David H. Horowitz to quickly revive the magazine. [4]
A spin- 1 2 particle is characterized by an angular momentum quantum number for spin s of 1 2 . In solutions of the Schrödinger equation, angular momentum is quantized according to this number, so that total spin angular momentum. However, the observed fine structure when the electron is observed along one axis, such as the z ...
In 5 Euclidean dimensions, the relevant isomorphism is Spin(5) ≅ USp(4) ≅ Sp(2) that implies that the single spinor representation is 4-dimensional and quaternionic. In 6 Euclidean dimensions, the isomorphism Spin(6) ≅ SU(4) guarantees that there are two 4-dimensional complex Weyl representations that are complex conjugates of one another.
Spin connection. In differential geometry and mathematical physics, a spin connection is a connection on a spinor bundle. It is induced, in a canonical manner, from the affine connection. It can also be regarded as the gauge field generated by local Lorentz transformations. In some canonical formulations of general relativity, a spin connection ...